language: Java (sun-jdk-1.7.0_10)
date: 396 days 21 hours ago
link:
visibility: public 
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abstract class Animal {
  public abstract String talks();
}
 
class Pet<T extends Animal>
{
  private T pet;
 
  public Pet(T pet)
  {
    this.pet = pet;
  }
 
  public String talks()
  {
    return pet.talks();
  }
}
 
class Cat extends Animal
{
  public String talks()
  {
    return "Meow";
  }
}
 
class Dog extends Animal
{
  public String talks()
  {
    return "Woof";
  }
}
 
public class Main
{
 
  public static void main(String[] args)
  {
    Pet<Cat> cat = new Pet<Cat>(new Cat());
    System.out.println("Cat says " + cat.talks());
 
    Pet<Dog> dog = new Pet<Dog>(new Dog());
    System.out.printf("Dog says " + dog.talks());
  }
 
}